Direct current visual evoked potentials on light and dark adaptation process.

直流视觉诱发电位对明暗适应过程的影响。

• 批准号: 61510031
• 负责人: YOSHIDA Shigeru
• 金额: $ 1.66万
• 依托单位: University of Tsukuba
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61510031/
• 关键词: Visual evoked potential; Direct current amplification; Luminance; 短期順応; 明るさ知覚; 順応水準; 視覚野脳波; 直流成分; サチレーション; EASY

Visual evoked potentials(VEP) were recorded by direct current amplification from Occipital to investigate the short term light and dark adaptation process. Stimulus patterns were light and dark step functions with the duration of 10, 50, 100, 500, 1000ms, and light and dark flash trains with 5, 10 and 20Hz. Averaged DC VEP and AC VEP(time constant 0.3s) were computed from 50 raw data. Adaptational shifts of DC VEP were found corresponding to light and dark stimulations: upward shift(negative) was for light adaptation and downward shift(positive) was for dark adaptation. Simulation of train VEP with adaptation factor was fitted better than without adaptation factor. A VEP model was proposed including onset, offset, adaptation, contrast and delay factors. Some of computer programs for experiment, EASY(EEG Analysis SYstem), were introduced to researchers of experimental psychology.

视觉诱发电势（VEP）通过枕骨的直接电流扩增记录，以研究短期光和黑暗适应过程。刺激模式是轻巧和深色的台阶功能，其持续时间为10、50、100、500、1000ms，以及5、10和20Hz的光和深色闪光列车。从50个原始数据计算平均DC VEP和AC VEP（时间常数0.3s）。发现直流VEP的适应性移位与暗刺激相对应：向上移动（负）是用于光适应的，并且向下移动（正）是用于黑暗适应性的。具有适应因子的火车VEP的模拟比没有适应因子的模拟要好。提出了VEP模型，包括发作，偏移，适应，对比和延迟因子。一些用于实验的计算机程序，简单（EEG分析系统），引入了实验心理学的研究人员。

项目成果

吉田茂: 生理心理学と精神心理学.

吉田茂：生理心理学和心理心理学。